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Finding the Fourth Proportional to 612.29, 918.51 and 201.47

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Solution

The fourth proportional to 612.29, 918.51 and 201.47 is: 302.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    612.29 : 918.51 = 201.47 : x
  2. Step 2: Convert to fraction form
    612.29/918.51 = 201.47/x
  3. Step 3: Cross multiply
    612.29x = 918.51 × 201.47
  4. Step 4: Simplify right side
    612.29x = 185,054.51
  5. Step 5: Solve for x
    x = 185,054.51/612.29
  6. Step 6: Final answer
    x = 302.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.